What measurement can indicate increased pressure in the right heart?

The measurement that indicates increased pressure in the right heart is pulmonary artery systolic pressure. This value is important because it reflects the pressure in the pulmonary artery during ventricular systole, which can be influenced by various conditions affecting the right side of the heart, such as right ventricular failure, pulmonary hypertension, or other heart and lung diseases.

Elevated pulmonary artery systolic pressure leads to increased workload on the right ventricle, and is a key parameter in assessing right heart function. When these pressures rise due to pathophysiological conditions, it signals the need for further investigation and potential intervention.

The other options do not directly measure pressures in the right heart. Left ventricular dimensions pertain to the function and structure of the left heart, while right atrial area may indicate overall heart size or function but does not specifically reflect pressure changes. The aortic valve gradient is related to the left heart, particularly with aortic stenosis, and does not provide insight into right heart pressure.